Operating mechanism for power-driven looms



A. HONEGGER. OPERATING IVIECHANISIVI FOR POWER DRIVEN LOOIVIS.

APPLICATION FILED AUG'I24. 192|. l 4 'Patenfd June 6,1922.

4 SHEETS-SHEET l A. HONEGGER.

OPERATING MECH'ANISIVI FOR POWER DRIVEN LOONIS.

. APPLICATION FILED AUG. 24,1921. 1,418,646. Patentediune 6, 1922.

4 SHEETS-SHEET 2- uiiialaisli II ffy A. HONEGGER.

. OPERATING MECHANISM'FOR POWER DRIVEN LO0MS.`

APPLlcATloN FILED Aue.24.1921.

1,418,646. Patented June 6, 1922.

.4 SHEETS-SHEET 3.

zin-vaginali JHozwyj-B, '127% A. HONEGGER.

OPERATING MECHANISM FOR POWER DHIVEN LOOMS.

APPLICATION FILED AUG-24| 1921. 1,418,646. PatentedJune 6, 1922.

4 SHEETS-'SHEET 4. y Lea we te i c siate is .si t is isaiasi series.

. ALBERT HONEGGER, 0L? RUTI, SWITZERLAND, ASSIGNOR '1.0 MASCHINENFABRIK R'UTI FORMERLY GASPAR HONEGGER, 0F RUTI, SWTZERLAND.

OPERATING ivincnnnrsiu non roWEn-Dnrvnn Loolvrs.

p miente.

Application. filed August 24, 1921'.

`which the following is a specification.

ln power driven looms having stationary shuttle boxes and a moving betten, the great drawback. has been met with, niorefparticularly in the case of" high speeds, that the hatten at the end oi its backward swing cannot be stopped su'liicient'lyquietly, so that the .reedis not set' in exactly the correct position with regard tothe shuttle box and/theretore, on the shuttle passingl through the shed, disturbancesoccur, that is, the shuttle is deflected troni itsproper path and causes damage.

The object ot 'the invention is to obviate` this drawback and to cause the periodic starting and stopping oii the crankshaft and hence ot' the batteri to be tree Yfrom -jerk without the ifo-action oi" toothed gearing.-

Partially toothed Wheels have already been used for moving the batten or the iveif't beating device by meansoi" a crank, no means, however, being provided for causing the crank sha't't to start and stop Without a jerk. In the present driving device partially toothed Wheels are also used, but the object, mentioned 'above is realized by pins or rollers fitted to the' driving wheel coacting `with a running-up surface and .a retaining surface ot a member. which is 1n operative connection with the crank sha'lt.

The accoi'npanying drawing shovvs structional example oit the invention.r

lligs. 'l and 2 are a side elevation and a plan view of a power driven loom with the driving` mechanism and showing the hatten in its back position.v

Figs. 3 and et are similar views showing the hatten in its-forward position.

Fig. 5 is a front `elevation ot the loom.

Figs. 6 to l0 show the driving mechanism in different positions and` Speciiication of Letters Patent.

Patented June (i, 1922.

Serial No. 494,783. y

Figs.` l1 and i2 are an end elevation of the device shown in Fig. 8 and a planview ot' the same.

The drivingwvheel 2 is fixed on the driving shaft l, which is journalled in the lower part oi the machine 'trame (Figs. l, 3 and The driving wheel isprovided with teeth, Which are` interrupted on two diametrically opposite parts ot the circumference'.` (Figs. 842), tivo guiding grooves 3, et. adjacent to the toothless parts of the circumference of the wheel 2, which are con- `centric Withfthe axis ot the Wheel, tWo pairs of 'rollers 5, G and '7, 8 mounted on arms, which rollers are arranged laterally of the teeth in the neighbourhood. ot the it'our last teeth, two-ascending guidingl surfaces 9, 10,

each one laterally at each running outl end of each guiding groove 23, i and tivo pairs of cani surfaces il, l2 and i3., 14 adjoining the end teeth ot the toothed part of the Wheel.

On the crank shaft l5 there is a pinion 16,l

thel teeth of which are interrupted at one point only,y and which 'is provided With two rollers 17, 18 fitted in the neighbourhood of the end teeth of the pinion onv its inner side and with t'vvo bent forked arms 19 and 20 on its outer side opposite the interrupted part ofthe pinion teeth, which comprises tivo teeth. `Connecting rods 21 connect the crank shaft i5 with the batten supports 2.2 in the usual manner. The shuttle boxes 23 are fixed to the end trames 24 ot the loom.

yIn.(,:o'iin'ection with Figs. 1 5 the action of the drive on the hatten shall now be described and in connection with Figs; 6-10 the sequence oi operations on` the periodic start- Tingl and stopping o'l" the crank shaft or the of the arrou7 (Fig. l), the roller 7 of the Wheel 2 will strike the arm 19 of the forked lever i9` 2t) before the enfraeiement or" the the wheel 2. lligs. 3 and 4 show the batten L in the front position, that is, when beating the weft. each halt revolution of the wheel 2 the batten L is moved forwards and backwards and remains in its rear position until the shuttle has run from one shuttle box into the other. To one revolution of the drivin@ shaft l the batten makes two backward and forward movements.

ln Fig. 6 the roller 5 of the wheel 2 is` about t0 press on the arm 19 of the forked lever 19, 2() and thereby to give` the toothed pinion 16 the initial rotation free from jerk. @n this movement taking place the roller 17 olE the pinion 16 comes out of the outwardly enlarged exit opening 4u, see Fig. 6, of the guiding groove Ll, which prevents an unin tentional rotation ot the pinion i6. while the roller 'i8 0i' the toothed pinion 16 slides along the descending curved surface 9 until the iirst tooth ofthe toothed portion ot the wheel 2, which now comes into operation, engages the l'irst tooth oi: the toothed pinion 16, which has already commenced to rotate. Through the roller 18 and the curved surface 9 an acceleration ol the toothed pinion 16 prevented, when the machine is running at a liigh speed, and a correct meshing ol' the wheels 2 and 16 is effected without a `ierk. ln order to enable the guiding grooves '3. 4:, `which project radially over the teeth of the wheel 2, to rotate under the toothed pinion 16, the hub olf the toothed pinion 16 and the crank shaft are recessed at 15a.

Fig. 7 shows the position in which the roller 16 leaves the clnved surface 9, the meshing i oi the teeth ot the two wheels 2 and16 (,"ommences and the initial rotation of the toothed pinion 16 by `means o'l the `roller 5 and the lever arm 19 stops. Fig. 9 shows the position in which the last tooth of the toothed pinion 1 6 still meshes with the wheel 2 and the roller 'I7 oit the toothed pinion 16 is about to enter the guiding groove 3 of the wheel 2. rlhearm 2O of the forked lever 19, 20 strikes the roller 6 olf the wheel 2, which prevents an acceleration ot the toothed pinion 16 and causes the pinion 16 to run out without a jerk. On the wheel 2 continuing to rotate, the last tooth of' the pinion 16 leaves thelast tooth ol thewheel 2 and the pinion 16 is given its linal rotation, when the roller 17 runs over the round ed entrance end o'lt the inner surface o'lt the guiding groove El.

Fig. 1() shows the position in which this final rotation ol" the toothed pinion 16 and thus its 'lfull rotation through 60O has been, completed and the roller 17 has entered the guiding groove 3. The toothed pinion 16 is now secured against any involuntary rotation.

On the rotation of the wheel 2 being reversed, the roller 6 o'l the wheel 2 presses on the arm 20 ci the torkedlever 1.9, 20 and the roller 18 ot the toothed pinion 16, which is slightly Yfurther away :from the wheel 2 than the roller 17 (Fig. 12), by running up on to the laterally projecting edge ot the inner part oi the guiding groove 3 or 4, prevents the toothed pinion 16 from rotating further, .atteiit has made its complete revolution.

'ihe curved surfaces 11, 12, 13 and 14 of the wheel 2 have the object of acting on the last tooth of the toothed pinion 16 when turned in one or the other direction and ol? thus preventing the last tooth oi each toothed portion oil the wheel 2 when turned in one or the other direction trom being badly worn.

lt will be seen 'from the above that through the (zo-action ot' the wheels 2 and 16 with interrupted teeth it is possible to obtain a pe riodic starting o'l the crank shaft without a jerk and a periodic stopping ol the crank shat't without a blow. The means 'for starting the toothed pinion without a jerk and vtor gently stopping the saine may be other than those shown.

The driving mechanism described makes it possible to set the batten accurately in its rear position and to work at a high speed through the `accurately limited rotation of the crank shaft without a jerk, without there being any fear of the shuttle being deliected 'lroni its proper course.

What .l claim is 1. A power driven loom comprising stationary shuttle boxes and a movable hatten, a crank shaft, a partially toothed pinion mounted on the crank shaft, a driving wheel having two diametrically opposed toothed portions meshing alternately with said pinion, a member in operative connection with the crank shal't having an inclined surface thereon, and rollers mounted on the driving `wheel at the ends olf each toothed portion thereof, the rollers at one end ol' each toothed portion oi." the driving wheel being capable oit acting upon one ot said inclined surtaces and oi running vup said pinion and the roller at the other end oit each toothed portion olf the driving wheel being` capable of receiving the push ot the other inclined surfaces and ot retaining said pinion.

2. A power driven loom coniprising sta tionary shuttle boxes and a moving batten, a crank shaltA a partially toothed pinion mounted on the crank shaft, a, driving wheel having opposed toothed portions meshing alternately with said pinion, a member in operative connection withthe crank shalt liaif'ing an` inclined surface, rollers mounted. on the drivii'ig wheel at the ends ol" said toothed portions thereof, the .rollers at one end of each toothed portion ot' the driving wheel being capable ol' acting upon one o'lf said inclined surfaces and oil? running up said pinion and the roller at the other end of each toothed portion ot the driving 'wheel being capable ot receiving the push of the other inclined surface and of retainingthe said pinion7 said driving wheel having eo-aXial grooves therein arranged co-aXial therewith, a roller fitted to the said pinion capable or" engaging a guiding groove of the driving wheel dnringthe forward motion of the batten, on the pinion coming to rest, and of remaining in the groove until the driving wheel and pinion re-engage.

3. A power driven loom as claimed in claim 1, having guiding surfaces on the driving wheel, which are coaxial with the latter, and a. second roller fitted to the pinion, which during the backward motion of the hatten rests, when the pinion is at rest, on such a guiding surface, as set forth.

4. A power driven loorn as claimed in elaiin l, having an inclined guide laterally ol' each groove at the vend Where the roller leaves lthe groove, 'for the purpose of preventing an acceleration of the toothed pinion on its commencing to rotate, as set forth.

5. A power driven loomv as claimed in claim 2, having an inclined guide laterally of each groove at the end Where the roller leaves the groove for preventing acceleration of the toothed pinion when it starts to rotate.

6. A power driven loom as claimed in 'claim l, having curved Surfaces at the loe ginning and end of each partialset ot teeth ot the driving wheel, which curved surfaces are capable of acting in a driving sense on what is the last tooth of the toothed pinion in the direction of rotation of the latter 'for the purpose ot protecting what is the last tooth of the driving wheel in the direction ol rotation from getting Worn, as set forth.

In testimony whereotI have a'liixed my Signature.

` ALBERT HONEGGER. 

